A tandem two-seat primary trainer, the THK-15 was an updated Magister, made of metal, and with a cockpit canopy.
Of 100 ordered for the Turkish Air Force, 60 had been delivered and production ceased in 1956.
54 were used by the Turkish Air Force 1955-1963 and the remaining THK-15 were donated to the Jordan Royal Air Force.
After the change to MKEK the MKEK-4 designation was used.
MKEK 4 Ugur
Engine: DH Gipsy Major 10 Mk.I, 145 hp
Wing span: 31 ft 2.5 in / 9.50 m
Wing area: 171 sq.ft
Length: 24 ft 7.25 in
Empty weight: 1465 lb
Loaded weight: 2045 lb
Max speed: 135 mph
Cruise: 110 mph
ROC: 800 fpm
Service ceiling: 16,000 ft
Range: 300 mi
Seats: 2 tandem
All Aero 